package com.apanal.qlife.common.util;

import javax.servlet.http.HttpServletRequest;

/**
 * ip工具类
 * 
 * 
 * @author shuliangxing
 * 
 * @date 2015-9-18下午5:01:13
 */
public class IpUtil {
	/**
	 * 获取真实ip地址
	 * 
	 * @param request
	 * @return
	 */
	public static String getIpAddr(HttpServletRequest request) {
		if (request == null) {
			return "unknown";
		}
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("http_client_ip");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("HTTP_X_FORWARDED_FOR");
		}
		// 如果是多级代理，那么取第一个ip为客户ip
		// if (ip != null && ip.indexOf(",") != -1) {
		// ip = ip.substring(0, ip.indexOf(",")).trim();
		// }
		// if ("0:0:0:0:0:0:0:1".equals(ip)) {
		// ip = "127.0.0.1";
		// }
		return ip;
	}
}
